Rain On Roofing Felt

Find a roofing contractor near you.

Rain on roofing felt.

There are several disadvantages to using felt underlayment on a roof. Rain can hamper any home improvement project but can greatly impact a roof repair or replacement. Roofing felt helps ensure the water drains off the roof and doesn t leak into your home. Roofing felt is not designed as a permanent exterior barrier against water.

It provides backup protection in the event of ice or water damage. When building felt s primary role is to keep water off the plywood to limit warping. It is safe to walk on. Note that you should never shingle over bare wood like a bird s feathers shingles shed the qwater but are not watertight especially in windblown rain or melting snow conditions.

One disadvantage of traditional felt roofing underlayment is it generally can t be left exposed for more than a few hours. The material may dry out or leach oils in the heat. You need a water barrier under them like roofing felt old school or a synthetic water barrier or roof shield or roof wrap breathable membrane. After weeks of planning you may feel impatient or frustrated when a storm lingers.

The decking sheathing should have been tarped and work stopped as soon as it was evident enough rain was going to fall to wet the wood or water barrier felt. Normal delays and the rain you indicated will not affect the structural properties of the panels. Wind driven rain or snow can trap water under your shingles putting your roof deck and inner residence at risk of moisture damage leaks rot and mold. But one element that remains outside our control is the weather.

Waterproof roofing felt gives the roof temporary protection from rain while you apply shingles tiles or other roof coverings. Roofing felt that has gotten wet can be covered with shingles as long as it is allowed to dry out first the surface underneath did not get wet and it did not wrinkle bubble or rip. This would impact the felt s ability to protect against moisture. Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained.

Our osb is rated exposure 1 and that means that it will withstand normal delays in construction.